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#include <stdio.h>
#include <assert.h>
#include <weston/compositor.h>
#include "shell-helper-server-protocol.h"
struct shell_helper {
struct weston_compositor *compositor;
struct wl_listener destroy_listener;
struct wl_list slide_list;
};
static void
shell_helper_move_surface(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *surface_resource,
int32_t x,
int32_t y)
{
struct shell_helper *helper = wl_resource_get_user_data(resource);
struct weston_surface *surface =
wl_resource_get_user_data(surface_resource);
struct weston_view *view;
view = container_of(surface->views.next, struct weston_view, surface_link);
if (!view)
return;
weston_view_set_position(view, x, y);
weston_view_update_transform(view);
}
enum SlideState {
SLIDE_STATE_NONE,
SLIDE_STATE_SLIDING_OUT,
SLIDE_STATE_OUT,
SLIDE_STATE_SLIDING_BACK,
SLIDE_STATE_BACK
};
enum SlideRequest {
SLIDE_REQUEST_NONE,
SLIDE_REQUEST_OUT,
SLIDE_REQUEST_BACK
};
struct slide {
struct weston_surface *surface;
struct weston_view *view;
int x;
int y;
enum SlideState state;
enum SlideRequest request;
struct weston_transform transform;
struct wl_list link;
};
static void slide_back(struct slide *slide);
static void
slide_done_cb(struct weston_view_animation *animation, void *data)
{
struct slide *slide = data;
slide->state = SLIDE_STATE_OUT;
wl_list_insert(&slide->view->transform.position.link,
&slide->transform.link);
weston_matrix_init(&slide->transform.matrix);
weston_matrix_translate(&slide->transform.matrix,
slide->x,
slide->y,
0);
weston_view_geometry_dirty(slide->view);
weston_compositor_schedule_repaint(slide->surface->compositor);
if (slide->request == SLIDE_REQUEST_BACK) {
slide->request = SLIDE_REQUEST_NONE;
slide_back(slide);
}
}
static void
slide_out(struct slide *slide)
{
assert(slide->state == SLIDE_STATE_NONE || slide->state == SLIDE_STATE_BACK);
slide->state = SLIDE_STATE_SLIDING_OUT;
weston_move_scale_run(slide->view, slide->x, slide->y,
1.0, 1.0, 0,
slide_done_cb, slide);
}
static void
slide_back_done_cb(struct weston_view_animation *animation, void *data)
{
struct slide *slide = data;
slide->state = SLIDE_STATE_BACK;
wl_list_remove(&slide->transform.link);
weston_view_geometry_dirty(slide->view);
if (slide->request == SLIDE_REQUEST_OUT) {
slide->request = SLIDE_REQUEST_NONE;
slide_out(slide);
} else {
wl_list_remove(&slide->link);
free(slide);
}
}
static void
slide_back(struct slide *slide)
{
assert(slide->state == SLIDE_STATE_OUT);
slide->state = SLIDE_STATE_SLIDING_BACK;
weston_move_scale_run(slide->view, -slide->x, -slide->y,
1.0, 1.0, 0,
slide_back_done_cb, slide);
}
static void
shell_helper_slide_surface(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *surface_resource,
int32_t x,
int32_t y)
{
struct shell_helper *helper = wl_resource_get_user_data(resource);
struct weston_surface *surface =
wl_resource_get_user_data(surface_resource);
struct weston_view *view;
struct slide *slide;
wl_list_for_each(slide, &helper->slide_list, link) {
if (slide->surface == surface) {
if (slide->state == SLIDE_STATE_SLIDING_BACK)
slide->request = SLIDE_REQUEST_OUT;
return;
}
}
view = container_of(surface->views.next, struct weston_view, surface_link);
if (!view)
return;
slide = malloc(sizeof *slide);
if (!slide)
return;
slide->surface = surface;
slide->view = view;
slide->x = x;
slide->y = y;
slide->state = SLIDE_STATE_NONE;
slide->request = SLIDE_REQUEST_NONE;
wl_list_insert(&helper->slide_list,
&slide->link);
slide_out(slide);
}
static void
shell_helper_slide_surface_back(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *surface_resource)
{
struct shell_helper *helper = wl_resource_get_user_data(resource);
struct weston_surface *surface =
wl_resource_get_user_data(surface_resource);
struct weston_view *view;
int found = 0;
struct slide *slide;
wl_list_for_each(slide, &helper->slide_list, link) {
if (slide->surface == surface) {
found = 1;
break;
}
}
if (!found || slide->state == SLIDE_STATE_SLIDING_BACK)
return;
if (slide->state == SLIDE_STATE_SLIDING_OUT)
slide->request = SLIDE_REQUEST_BACK;
else
slide_back(slide);
}
static const struct shell_helper_interface helper_implementation = {
shell_helper_move_surface,
shell_helper_slide_surface,
shell_helper_slide_surface_back
};
static void
bind_helper(struct wl_client *client, void *data, uint32_t version, uint32_t id)
{
struct shell_helper *helper = data;
struct wl_resource *resource;
resource = wl_resource_create(client, &shell_helper_interface, 1, id);
if (resource)
wl_resource_set_implementation(resource, &helper_implementation,
helper, NULL);
}
static void
helper_destroy(struct wl_listener *listener, void *data)
{
struct shell_helper *helper =
container_of(listener, struct shell_helper, destroy_listener);
free(helper);
}
WL_EXPORT int
module_init(struct weston_compositor *ec,
int *argc, char *argv[])
{
struct shell_helper *helper;
helper = zalloc(sizeof *helper);
if (helper == NULL)
return -1;
helper->compositor = ec;
wl_list_init(&helper->slide_list);
helper->destroy_listener.notify = helper_destroy;
wl_signal_add(&ec->destroy_signal, &helper->destroy_listener);
if (wl_global_create(ec->wl_display, &shell_helper_interface, 1,
helper, bind_helper) == NULL)
return -1;
return 0;
}
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